CMC Arthritis effects the carpometarcarpal joint, commonly the first one found at the base of the thumb. This can be incredibly painful as this part of the joint is used for a lot of everyday tasks such as buttoning a shirt or opening a jar and the strength of the thumb becomes severely reduced as the condition develops. There is no telling how debilitating the condition is until you are suffering from it yourself. The cartilage in the joint wears away and the bones start rubbing against each other without the cushioning, causing friction and pain.

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